Of what use our eyebrows?

Answer 1

The main function of the eyebrow is to prevent moisture, mostly salty sweat and rain, from flowing into the eye, an organ critical to sight. The typical curved shape of the eyebrow (with a slant on the side) and the direction in which eyebrow hairs are pointed, make sure that moisture has a tendency to flow sideways around the eyes, along the side of the head and along the nose. The slightly protruding brow ridges of modern humans could also still play a supporting role in this process. Together with the eyebrows, the brow ridges also shade the eyes from sunlight.

Answer 2

The main function of the eyebrow is to prevent moisture, mostly salty sweat and rain, from flowing into the eye, an organ critical to sight. The typical curved shape of the eyebrow (with a slant on the side) and the direction in which eyebrow hairs are pointed, make sure that moisture has a tendency to flow sideways around the eyes, along the side of the head and along the nose. The slightly protruding brow ridges of modern humans could also still play a supporting role in this process.[citation needed] Together with the eyebrows, the brow ridges also shade the eyes from sunlight.

Eyebrows also prevent debris such as dandruff and other small objects from falling into the eyes, as well as providing a more sensitive sense for detecting objects being near the eye, like small insects.

Eyebrows also have an important facilitative function in communication, strengthening expressions like surprise or anger.

Answer 3

Essentially, now that humans have evolved beyond needing all over body hair to keep us warm, that is since we started using other dead animal skins to do that for us, we grow hair where we need protection.

Our heads, genitals and armpits mostly. Why armpits I hear you ask? There is lots going in our armpits, lots of nerve collections and some important vascular stuff. A lot of martial arts techniques advocate an upward strike to the armpit (axilla) to create a lot of pain in an attacker.

So we grow eyebrows to afford protection to our eye sockets. The lower part of the frontal bone (forehead) is not as strong as one might think. If one wants to headbutt someone, the area where eyebrows are is not used to hit with. If one did, one would probably knock oneself out. Just look at how often a boxing match is stopped because a boxer has a cut above the eye that can't be quenched.

So, we grow eyebrows to afford protection to our eye sockets.

Answer 4

Primarily their use is to block sweat from running into our eyes, and they do play a part in facial expressions, an arched eyebrow translates as angry, an upward curved one means your suprised etc. Over the years they have also been used by females to enhance the beauty of the eyes by painting/tweezing/tinting them

Answer 5

I heard we have eyebrows to protect our eyes. Specifically, in hot climates, sweat often pours down so eyebrows act as a buffer to protect our eyeballs.

Answer 6

The brow (and eyebrow) keeps sweat out of our eyes

Answer 7

to help keep dirt and dust from falling into our eyes. the eyebrows are a landing, so to speak. they protect our eyes.

Answer 8

Do you know what a ladybird is? I just wondered.

Nothing to do with eyebrows, I just want to be differant

Answer 9

As with the eyelashes they help to keep the dust out of the eyes.

Answer 10

to stop sweat and dirt from falling down into our eyes and to convey emotions, learnt that from nina and the neurons, kids programmes eh a minefield of information